Plea Bargain, find a lesser offense and stick to it, but don't claim that you know what offense it is you did because unless you are trained you have no credibility. Most likely the judge will want things to move along, he'll hear the police officer's side and then you'll refute with a crazy story like "I sneezed and my foot slipped off the clutch pedal." Bring data like, "I haven't even gotten a speeding ticket in X years, I would consider myself to be a good driver, etc." They aren't there to throw the book at you, just be very nice, and they'll see it's your first offence etc.